I know, unfortuanately that the 2006 gs300 with the marklev system does not play mp3 files, but i know it plays dvd-audio. anyone know how to format or burn a disc to hold a lot of music but play on this system. i basically need to know what coding (i.e. mp3, wav, wma...) to use for the files on the DVD disc so that it will play on the MarkLev system. really appreciate the help - this has been the only dissappoinment so far on the car. thanks